When should a charter-bus driver generally begin allowing riders to board?
Correct answer: C – At departure time
The Vermont CDL manual advises charter-bus drivers not to admit riders until departure time. Limiting early access helps prevent theft or vandalism while the bus is waiting. Boarding is not tied to the arrival of every passenger, completion of baggage loading, or a special dispatcher instruction.
Source: Vermont Commercial Driver’s License Manual — § 4.2.4, “At Your Destination”

